Rs-232 Switch Panel: Connectors - GE D20 Installation And Operation Manual

GE Energy
Familiarization
, continued
RS-232 Switch
RS-232 Switch Panel connectors, accessible from the rear of the panel, are illustrated
Panel:
below:
Connectors
The connectors have the following functionality:
P1 through P16
J1 through J8
TB1
TB2, TB4
General
Full
J1
TB 3
P1
P9
Provide serial connections to each of the two CCUs. P1 through P8 are
connected to CCU A, and P9 through P16 are connected to CCU B.
Connect to field equipment. If CCU A is active, serial connections P1
through P8 are switched to J1 through J8. If CCU B is active, serial
connections P9 through P16 are switched to J1 through J8.
Connect the monitor and control cables (referred to as the Watchdog
cables) from each of the CCUs.
In systems with more than eight serial port connections, TB2 and TB4
are used to interconnect multiple RS-232 Switch Panels. A maximum of
eight RS-232 Switch Panels can be cascaded.
Installation and Operations Guide
J2 J3 J4 J5
P2 P3 P4 P5
P13
P10 P11 P12
994-0078-2.00-7
D20/D200
J7 J8
J6
P6 P7 P8
P16
P14 P15
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